I have managed to catch the stuck dictionary search. However, thanks to the recent modifications, it stuck at the "searching dictionary..." message.
I first chose the "Since" to look up, but as fuzzy was not set, it didn't come up with anything. I chose the edit, and modified the capital S to small s, and did the search again. I flipped some pages among the dictionaries then closed the window. Then I chose another word "fiction" to search. But it never appeared, I had to tap the "searching dictionary" window to be able to continue reading. Please check the attached verbose debug log. Thanks in advance.
crash.txt